Troubleshooting A Roadmaster InvisiBrake Compressor That Continuously Runs
Question:
Invisibrake was deadfoot , I replaced a 50a fuse on main panel of my E450. Discovered the battery fuse to invisibrake was blown, as well. When replace that one, the compressor runs continuously. Doesnt seem to pressurize to stop it. What seems to be the problem? Thanks.
asked by: Steve K
Expert Reply:
In the installation instructions for the Roadmaster BrakeMaster # RM-8700 there are two fuses wired to the air compressor circuit. One 20 amp fuse on the power wire of the battery, and a 10 amp fuse connected on the blue wire that runs from the ignition switch to the air compressor. I've included a wiring diagram to help you check these fuses and ensure they are in working order.
As for the compressor continuously running, this could be an indication that the breakaway switch has an issue. If the pin is missing from the breakaway switch or there is damage to the switch or its wiring the system will think that your vehicle has broken away from the motorhome and keep running the compressor to ensure that your system is braking the vehicle so that you can safely pull over.
If the breakaway switch is fine then let me know and we can keep troubleshooting.
Product Page this Question was Asked From
Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Tow Bar Braking Systems
- Brake Systems
- Pre-Set System
- One Time Set-Up
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Hydraulic Brakes
- Roadmaster
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Recommended Flat Towing Set Up for a 2019 Chevy Colorado
- Shop: Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Shop: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Shop: Roadmaster Battery Disconnect with Switch for Towed Vehicle w/ Flat Tow Brake System - Gas
- Shop: Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Shop: Roadmaster Nighthawk All-Terrain Tow Bar w/ LED Lights - Non-Binding - RV Mount - 8,000 lbs
- Shop: Roadmaster Stop Light Switch Kit
- Q&A: Can a 2019 Chevrolet Colorado 4x4 Be Flat-Towed
- Video: Demco SBS Stay-IN-Play DUO Braking System Installation - 2022 Chevrolet Colorado
- Video: Best 2019 Chevrolet Colorado Flat Tow Set Up Options
- Video: Roadmaster Battery Charge Line Kit for Motor Homes Installation - 2023 Thor Freedom Elite Motorhome
- Video: Curt 7-Way to RV Socket LED Circuit Tester Review
- Video: Demco Stay-IN-Play DUO Braking System Installation - 2017 Chevrolet Colorado
- Search Results: tire valve extension
- Q&A: Troubleshooting Roadmaster Invisibrake that Doesn't Build Pressure
- Search Results: hitch wiring tester
- Search Results: 7 blade tester
- Search Results: roadmaster 794 diodes
- Video: Roadmaster Universal Diode Wiring Kit Installation - 2019 Chevrolet Colorado
- Search Results: rm~156~25
- Search Results: 7 pin trailer connector tester
- Q&A: Is The Vehicle Side Charge Line Kit Needed If The Motorhome Already Has A Charge Line
- Q&A: Availability of Larger Tow Bar Pins for Roadmaster Falcon All-Terrain Tow Bar
- Article: Roadmaster Vehicle Specific Base Plates
- Video: Roadmaster Battery Charge Line Kit Review
- Q&A: Recommended Tow Bar Wiring For A 2023 Chevy Colorado
- Search Results: roadmaster breakaway switch
- Article: Flat Towing Package for 2008-2011 Honda CR-V
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)